CN103591805B - Ring type roasting furnace cover and manufacturing method thereof - Google Patents
Ring type roasting furnace cover and manufacturing method thereof Download PDFInfo
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- CN103591805B CN103591805B CN201310580685.7A CN201310580685A CN103591805B CN 103591805 B CN103591805 B CN 103591805B CN 201310580685 A CN201310580685 A CN 201310580685A CN 103591805 B CN103591805 B CN 103591805B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention provides a ring type roasting furnace cover which is mainly applied to ring type roasting furnaces in the carbon industry. The ring type roasting furnace cover comprises an arch body arranged on a steel structural framework, and a heat preservation layer composited on the arch body, wherein the arch body is built through a plurality of light special refractory bricks. The ring type roasting furnace cover is characterized in that the heat preservation layer comprises an alumina silicate fiber layer, a metal screen and a sealing layer, the alumina silicate fiber layer is an alumina silicate fiber blanket, the sealing layer comprises light refractory aggregates, light fire-proof powder, granularity perlite, cement, asbestos wool, polyacrylamide, fibrin, bentonite and an appropriate amount of water, and a manufacturing method of the ring type roasting furnace cover is provided. The ring type roasting furnace cover has the advantages of being reasonable in structure, good in sealing performance, high in refractoriness and erosion resistance, good in heat preservation effect, obvious in energy saving effect, low in cost, long in service life and the like.
Description
Technical field
The present invention relates to ring-form calcining furnace, specifically, is ring-form calcining furnace bell of a kind of carbon industry graphite product heat treatment and preparation method thereof.
Background technology
Ring-form calcining furnace is one of main Thermal Equipment of charcoal element production, belong to high energy consumption industrial furnace equipment, generally all build by laying bricks or stones in underground, bell is only had to be exposed on the ground, bell is made up of steel structure framework and refractory material, in actual production use procedure, bell hot face temperature reaches more than 140 DEG C, and heat loss is larger.
In recent years, especially after 2005, along with exploitation and the application of new material, new technology, roaster bell majority adopts ceramic fiber module anchoring to install and is made, the advantages such as have thermal conductivity factor little, unit weight is low, and heat energy loss is little, but disposable cost is higher; And before 2005, roaster bell is substantially all adopt fire-resistant light clay brick to build by laying bricks or stones to form, most domestic Tan Su enterprise is so far still in use, its advantage is that cost is low, easy construction, but shortcoming is that refractory brick thermal conductivity factor is higher, and increase with the rising of furnace chamber temperature, in long term high temperature use procedure,, there is gap in refractory brick contraction distortion, causes furnace chamber negative pressure to be lost larger each other, thermal losses is more, causes energy excess waste.
Therefore, the construction technology of carbon industry to ring-form calcining furnace bell is constantly groped, and constantly brings forth new ideas, take series of measures and isothermal holding is carried out to it, what adopt the earliest is cover on light-weight brick with diatomite brick, and advantage is lighter in weight, and density is 0.5g/ ㎝
3, but globality is poor, poor sealing, and now superseded; Next adopts lightening casting material at refractory brick uniform application on the surface, and advantage is that globality is better, uses initial stage bell thermal-insulating sealing also better, but along with the change repeatedly of production temperature height, castable thermal shock resistance is poor, occurs phenomenons such as ftractureing, come off, does not reach heat insulation effect; At present, the heat preserving mode that ring-form calcining furnace bell is conventional, be adopt quality silicate composite thermo-insulating coating to carry out smearing covering on refractory brick surface, it is made up of refractory fibre powder, additive, binding agent etc., and heat insulation effect is better, but it is lower that shortcoming is intensity, charcoal element production industry dust is comparatively large, and need often to clean, quality silicate composite thermo-insulating material successively comes off in cleaning, use procedure, need regular repairing, service life is shorter.
Summary of the invention
The object of the invention is, overcome the deficiencies in the prior art, provide a kind of rational in infrastructure, good seal performance, by force, heat insulation effect is good for refractoriness and corrosion resistance ability, and energy-saving effect is obvious, and cost is low, the ring-form calcining furnace bell of long service life; And its preparation method is provided.
The technical scheme realizing the object of the invention employing is, a kind of ring-form calcining furnace bell, it comprises steel structure framework and is equipped with ogive, composite heat-insulating layer on described ogive, described ogive is built by laying bricks or stones by some pieces of lightweight heterotypic fire bricks and is formed, it is characterized in that, described heat-insulation layer comprises alumina silicate fibre layer, metallic sieve and sealant; Described alumina silicate fibre layer is alumina silicate fibre blanket, described sealant comprises and carries out proportioning by the raw material of quality component, and 100 parts, the light-weight refractory aggregate of granularity 1 ~ 5mm, the light-weight refractory powder 100 parts of granularity >0 ~ 1mm, the perlite 85 ~ 100 parts of granularity 3mm, cement 230 ~ 235 parts, asbestos wool 65 ~ 70 parts, polyacrylamide 4 ~ 6 parts, cellulose 4 ~ 6 parts, bentonite 15 ~ 20 parts, water are appropriate.
A preparation method for ring-form calcining furnace bell, is characterized in that, it comprises the following steps:
1) steel structure framework is placed in ground grading, on steel structure framework, adopts traditional masonry way of mutual snap close, extruding mutually, make some pieces of lightweight heterotypic fire bricks build by laying bricks or stones in ogive;
2) on ogive, cover the thick alumina silicate fibre blanket of 20mm form alumina silicate fibre layer;
3) on alumina silicate fibre layer, place the metallic sieve of string diameter 1mm;
4) on metallic sieve, smear the thick sealant of 30 ㎜, sealant carries out proportioning by the raw material of quality component, 100 parts, the light-weight refractory aggregate of granularity 1 ~ 5mm, the light-weight refractory powder of granularity >0 ~ 1mm 100 parts, the perlite of granularity 3mm 85 ~ 100 parts, cement 230 ~ 235 parts, asbestos wool 65 ~ 70 parts, polyacrylamide 4 ~ 6 parts, cellulose 4 ~ 6 parts, bentonite 15 ~ 20 parts mixing, uniform stirring makes mixed dry material, suitable quantity of water is added in mixed dry material, uniform stirring is expected in the pasty state again, pasty state material is spread upon on metallic sieve, at room temperature, solidification in dry 36 ~ 48 hours, form sealant,
5) the pasty state material immersion sieve screen apertures of metallic sieve and the micropore of alumina silicate fibre layer that form sealant are surperficial in ogive, and when pasty state material sealant dry solidification, sealant, metallic sieve and alumina silicate fibre layer, ogive are fixed into and are integrated.
Ring-form calcining furnace bell of the present invention, because heat-insulation layer comprises the structure that alumina silicate fibre layer, metallic sieve and sealant be connected, alumina silicate fibre layer adopts alumina silicate fibre blanket; Sealant adopts and carries out proportioning in right amount by 100 parts, the light-weight refractory aggregate of quality component granularity 1 ~ 5mm, the light-weight refractory powder 100 parts of granularity >0 ~ 1mm, the perlite 85 ~ 100 parts of granularity 3mm, cement 230 ~ 235 parts, asbestos wool 65 ~ 70 parts, polyacrylamide 4 ~ 6 parts, cellulose 4 ~ 6 parts, bentonite 15 ~ 20 parts, water, uniform stirring expects to spread upon on metallic sieve in the pasty state, at room temperature, drying solidify to form for 36 ~ 48 hours; The pasty state material of formation sealant can be made to immerse the sieve screen apertures of metallic sieve and the micropore of alumina silicate fibre layer in ogive surface, when pasty state material sealant dry solidification, sealant, metallic sieve and alumina silicate fibre layer, ogive are fixed into and are integrated, because selection material is reasonable, rational in infrastructure, therefore make the good seal performance of ring-form calcining furnace bell, by force, heat insulation effect is good for refractoriness and corrosion resistance ability, cost is low, long service life; The good manufacturability of its preparation method, make the making easy-formation of ring-form calcining furnace bell, and quality is good.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of ring-form calcining furnace bell;
Fig. 2 is I enlarged diagram in Fig. 1.
Detailed description of the invention
Utilize drawings and Examples below, the invention will be further described.
See figures.1.and.2, a kind of ring-form calcining furnace bell of the present invention, comprising: steel structure framework 1 is equipped with ogive 2, composite heat-insulating layer 3 on described ogive 2, and described ogive 2 is built by laying bricks or stones by some pieces of lightweight heterotypic fire bricks 4 and formed.Described heat-insulation layer 3 comprises alumina silicate fibre layer 5, metallic sieve 6 and sealant 7.Described alumina silicate fibre layer 5 is alumina silicate fibre blanket, described sealant 7 comprises and carries out proportioning by the raw material of quality component, and 100 parts, the light-weight refractory aggregate of granularity 1 ~ 5mm, the light-weight refractory powder 100 parts of granularity >0 ~ 1mm, the perlite 85 ~ 100 parts of granularity 3mm, cement 230 ~ 235 parts, asbestos wool 65 ~ 70 parts, polyacrylamide 4 ~ 6 parts, cellulose 4 ~ 6 parts, bentonite 15 ~ 20 parts, water are appropriate.
Realize the preparation method of a kind of ring-form calcining furnace bell of the present invention, comprise the following steps:
1) steel structure framework 1 is placed in ground grading, on steel structure framework 1, adopts traditional masonry way of mutual snap close, mutually extruding, make some pieces of lightweight heterotypic fire bricks 4 build in ogive 2 by laying bricks or stones, strengthen refractoriness and corrosion resistance;
2) on ogive 2, cover the thick alumina silicate fibre blanket of 20mm form alumina silicate fibre layer 5, mutual seam crossing close proximity, good airproof performance, unit weight is low, and thermal conductivity factor is little;
3) on alumina silicate fibre layer 5, place the metallic sieve 6 of string diameter 1mm, aperture 10 ㎜ × 10 ㎜, play the effect strengthening anti-folding and compressive resistance;
4) on metallic sieve 6, the thick sealant of 30 ㎜ 7 is smeared, sealant 7 carries out proportioning by the raw material of quality component, 100 parts, the light-weight refractory aggregate of granularity 1 ~ 5mm, the light-weight refractory powder of granularity >0 ~ 1mm 100 parts, the perlite of granularity 3mm 85 ~ 100 parts, cement 230 ~ 235 parts, asbestos wool 65 ~ 70 parts, polyacrylamide 4 ~ 6 parts, cellulose 4 ~ 6 parts, bentonite 15 ~ 20 parts mixing, uniform stirring makes mixed dry material, suitable quantity of water is added in mixed dry material, uniform stirring is expected in the pasty state again, pasty state material is spread upon on metallic sieve 6, at room temperature, solidification in dry 36 ~ 48 hours, form sealant 7, sealant 7 thermal conductivity factor is low, sealing, high insulating effect,
5) the pasty state material immersion sieve screen apertures of metallic sieve 6 and the micropore of alumina silicate fibre layer 5 that form sealant 7 are surperficial in ogive 2, when pasty state material sealant 7 dry solidification, sealant 7, metallic sieve 6 and alumina silicate fibre layer 7, ogive 2 are fixed into and are integrated, make ring-form calcining furnace bell, the overall mechanical strength of ring-form calcining furnace bell is high, compression strength >43KPa, refractoriness >=1300 DEG C, long service life, high insulating effect.
Specific embodiment is described below in detail:
Embodiment 1: sealant 7 is prepared burden by quality Dan Wei ㎏, light-weight refractory aggregate 100 ㎏ of granularity 1 ~ 5mm, light-weight refractory powder 100 ㎏ of granularity >0 ~ 1mm, perlite 85 ㎏ of granularity 3mm, cement 230 ㎏, asbestos wool 65 ㎏, polyacrylamide 4 ㎏, cellulose 4 ㎏, bentonite 15 ㎏, make mixed dry material through mixing and uniform stirring.During use, in mixed dry material, add appropriate water make pasty state material.
Embodiment 2: sealant 7 is prepared burden by quality Dan Wei ㎏, light-weight refractory aggregate 100 ㎏ of granularity 1 ~ 5mm, light-weight refractory powder 100 ㎏ of granularity >0 ~ 1mm, perlite 93 ㎏ of granularity 3mm, cement 232 ㎏, asbestos wool 67 ㎏, polyacrylamide 5 ㎏, cellulose 5 ㎏, bentonite 18 ㎏.
Embodiment 3: sealant 7 is prepared burden by quality Dan Wei ㎏, light-weight refractory aggregate 100 ㎏ of granularity 1 ~ 5mm, light-weight refractory powder 100 ㎏ of granularity >0 ~ 1mm, perlite 100 ㎏ of granularity 3mm, cement 235 ㎏, asbestos wool 70 ㎏, polyacrylamide 6 ㎏, cellulose 6 ㎏, bentonite 20 ㎏.
Embodiment 4: sealant 7 is prepared burden by quality Dan Wei ㎏, light-weight refractory aggregate 100 ㎏ of granularity 1 ~ 5mm, light-weight refractory powder 100 ㎏ of granularity >0 ~ 1mm, perlite 90 ㎏ of granularity 3mm, cement 233 ㎏, asbestos wool 69 ㎏, polyacrylamide 6 ㎏, cellulose 6 ㎏, bentonite 17 ㎏.
Embodiment 5: sealant 7 is prepared burden by quality Dan Wei ㎏, light-weight refractory aggregate 100 ㎏ of granularity 1 ~ 5mm, light-weight refractory powder 100 ㎏ of granularity >0 ~ 1mm, perlite 96 ㎏ of granularity 3mm, cement 234 ㎏, asbestos wool 66 ㎏, polyacrylamide 5 ㎏, cellulose 6 ㎏, bentonite 19 ㎏.
Embodiment 6: sealant 7 is prepared burden by quality Dan Wei ㎏, light-weight refractory aggregate 100 ㎏ of granularity 1 ~ 5mm, light-weight refractory powder 100 ㎏ of granularity >0 ~ 1mm, perlite 98 ㎏ of granularity 3mm, cement 235 ㎏, asbestos wool 68 ㎏, polyacrylamide 5 ㎏, cellulose 5 ㎏, bentonite 16 ㎏.
Lightweight heterotypic fire brick of the present invention, alumina silicate fibre blanket are commercially available prod.Forming the light-weight refractory aggregate of sealant 7, light-weight refractory powder, cement, asbestos wool, polyacrylamide, cellulose and bentonite and be finished product raw material, is commercially available prod very widely, source.Cement selects 425#, 525#; The granularity of described light-weight refractory aggregate is 1 ~ 5mm; The granularity of described light-weight refractory powder is >0 ~ 1mm, all production and sales such as Suzhou Jin Xingyuantong new material Co., Ltd, sky, Zibo Hongxin Materials Co., Ltd.
Light-weight refractory aggregate of the present invention and light-weight refractory powder principal item have clayey, High-Alumina, mullite, and this material has the advantages that unit weight is light, intensity is high, high temperature resistant and heat-proof quality is good.
Light-weight refractory aggregate of the present invention and light-weight refractory powder technical performance index
Ring-form calcining furnace bell compliance test result of the present invention and economic analysis:
Ring-form calcining furnace bell of the present invention effectively prevent the shortcoming of traditional roaster bell, and it is practical stronger, integral heat insulation successful, according to on-the-spot actual measurement before and after insulation, bell surface temperature, high temperature and secondary high temperature furnace chamber on average reduce about 35 DEG C compared with the bell surface temperature of conventional lightweight brick masonry, reduce furnace chamber thermal loss, strengthen heat exchange in stove, reduce energy resource consumption, fuel cost and production cost are saved.
According to ring-form calcining furnace bell preparation method of the present invention, the technological transformation of the roaster bell that traditional lightweight special form brick is built by laying bricks or stones can be directly used in, after clean for former bell outer surface cleaning, construct by the 2-5 step of ring-form calcining furnace bell preparation method of the present invention, thus obtain novel ring-form calcining furnace bell, not only easy construction, and cost is lower, the totle drilling cost only 3000 yuan of each bell transformation.Domestic Tan Su enterprise ring-form calcining furnace on average calculates by 30 furnace chambers, stove running 20 bells, every platform ring-form calcining furnace bell technological transformation totle drilling cost 60,000 yuan, through theory calculate, on former bell basis, only need one-time investment 60,000 yuan, just can transform an old-fashioned roaster bell and become ring-form calcining furnace bell of the present invention, every platform stove is annual at least 15 ten thousand yuan of expense capable of saving fuel just.
Claims (2)
1. a ring-form calcining furnace bell, it comprises steel structure framework, described steel structure framework is equipped with ogive, composite heat-insulating layer on described ogive, described ogive is built by laying bricks or stones by some pieces of lightweight heterotypic fire bricks and is formed, and described heat-insulation layer comprises alumina silicate fibre layer, metallic sieve and sealant; It is characterized in that, described alumina silicate fibre layer is alumina silicate fibre blanket, described sealant comprises and carries out proportioning by the raw material of quality component, and 100 parts, the light-weight refractory aggregate of granularity 1 ~ 5mm, the light-weight refractory powder 100 parts of granularity 0 ~ 1mm, the perlite 85 ~ 100 parts of granularity 3mm, cement 230 ~ 235 parts, asbestos wool 65 ~ 70 parts, polyacrylamide 4 ~ 6 parts, cellulose 4 ~ 6 parts, bentonite 15 ~ 20 parts, water are appropriate.
2. the preparation method of a kind of ring-form calcining furnace bell according to claim 1, it is characterized in that, it comprises the following steps:
1) steel structure framework is placed in ground grading, on steel structure framework, adopts traditional masonry way of mutual snap close, extruding mutually, make some pieces of lightweight heterotypic fire bricks build by laying bricks or stones in ogive;
2) on ogive, cover the thick alumina silicate fibre blanket of 20mm form alumina silicate fibre layer;
3) on alumina silicate fibre layer, place the metallic sieve of string diameter 1mm;
4) on metallic sieve, smear the thick sealant of 30 ㎜, sealant carries out proportioning by the raw material of quality component, 100 parts, the light-weight refractory aggregate of granularity 1 ~ 5mm, the light-weight refractory powder of granularity 0 ~ 1mm 100 parts, the perlite of granularity 3mm 85 ~ 100 parts, cement 230 ~ 235 parts, asbestos wool 65 ~ 70 parts, polyacrylamide 4 ~ 6 parts, cellulose 4 ~ 6 parts, bentonite 15 ~ 20 parts mixing, uniform stirring makes mixed dry material, suitable quantity of water is added in mixed dry material, uniform stirring is expected in the pasty state again, pasty state material is spread upon on metallic sieve, at room temperature, solidification in dry 36 ~ 48 hours, form sealant,
5) the pasty state material immersion sieve screen apertures of metallic sieve and the micropore of alumina silicate fibre layer that form sealant are surperficial in ogive, and when pasty state material sealant dry solidification, sealant, metallic sieve and alumina silicate fibre layer, ogive are fixed into and are integrated.
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| CN201310580685.7A CN103591805B (en) | 2013-11-19 | 2013-11-19 | Ring type roasting furnace cover and manufacturing method thereof |
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| CN105154638A (en) * | 2015-10-22 | 2015-12-16 | 中航卓越锻造（无锡）有限公司 | Hearth structure of normalizing furnace |
| CN110940191B (en) * | 2019-12-12 | 2022-05-27 | 上海电气上重铸锻有限公司 | Electric furnace lid center piece and material thereof |
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Effective date of registration: 20160128 Address after: 132002 Heping Street, Changyi District, Jilin, China, No. 9, No. Patentee after: Jilin Carbon Co., Ltd. Address before: 132001 Jilin carbon Limited by Share Ltd, Sinosteel group 9, Heping Street, Changyi District, Jilin, Jilin Patentee before: Jilin Carbon Co., Ltd. of Zhonggang Group |